Bowhunting shots are by and large, practical shots. An archer must respond to the shot scenario in the moment. John Schulz calls this "conditioned instinct". There is no doubt that a reference aiming system, draw and hold style of shooting will excel on a target range at stationary non-living targets.
When we are hunting you never know what you are going to get. Just as the wingshooter must be ready to respond to a shot in the field, many successful bowhunters approach their shooting style in the same way.
Have you watched some of the draw and hold (wheel-bow and stickbow) shooters loose an opportunity at a close range simply because their shooting style limits their ability to make a quick shot?
Paul Schafer talked about this in his interview article, that the ability to make a snap shot is very important to him. Anyone who has hunted with a bow for any amount of time and had an opportunity to take a game animal will recognize the advantage to being able to shoot quickly and without prolong thought.
A "snap" shooting style can be VERY effective in the hunting woods.
I grew up with a background of target archery and was taught a very static style of shooting. Over the years this developed into target panic and focal hand dystonia. I now have great difficulty with a snap style of shooting right handed. Too many years of holding at full draw to "reprogram".
I am shooting left handed now, and I have to say, I am shooting a snap "instinctive" style. I really like this style! Fluid and continuous, just like throwing a basketball thru the hoop. My only interest for many years now has been taking game with a bow.
One of the things I think that is very important for a snap shooter is to avoid shooting TOO MUCH! That will lead to problems. For the bowhunter, shoot one arrow, go pull. And avoid shooting at a bullseye. Leaves, stumps, 3-D animal with no aiming "dots". I truly believe you will be better off developing this "hunting" style of practice and shooting form, if your main interest are grilled backstrap steaks...